I decided to improve things further by adding a pressure gauge. I fussed around with setting the pressure on the pump before. The gauge I used for that was attached to one of the hose bibs. I think adding a gauge closer to the pump will be better. It'll certainly be easier to make future adjustments.
I found all of the parts that I needed at Lowes.
- 0-60 psi pressure gauge (the pump is supposed to range from 30-50 psi).
- 1/2-in x 1/4-in Threaded Adapter Bushing Fitting
- 1/2-in slip x 1/2-in fpt PVC elbow (I can't find it on the web site to link to.)
- 1/2-in PVC tee
I've already used almost 300 gallons of rain water this year.